Internal-combustion engine.



T. REUTER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG. 13. 1909. RENEWED APR. a, 1013. 1, 1 12,837u

Patented Oct. 6, 1914.

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WITN E s s INVENTUFK T. REUTER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED "AUG. 1a. 1909 RENEWED APR.8.1913.

T. REUTER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG.13. 1909. RENEWED APR. 8, 191a.

Patented 001396, 1914.

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T. REUTER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG.13.1909. RENEWED APR.8.1913. 1,1 12,837.

w/mEssEs T. REUTER.

INTERNAL COMBUSTION ENGINE.

APPLIOATION FILED AUG13.1909 RENEWED APR. a, 1913.

1,1 12,837. Patented 001;. 6, 1914.

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T. REUTBR.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG.13.1909, RENEWED APR. 8, 191a.

Patented Oct. 6, 1914.

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axxkmk THEOIDOR REUTER, OF WINTERTHUR, SWITZERLAND, ASSIGNOR T0 BUSCH-SULZEB BROS.-DIESEL ENGINE COMPANY, OF ST. LOUIS, MISSOURI, A

MIssoU'RI.

Specification of Letters Patent.

CORPORATION OF INTERNAL-COMBUSTION ENGINE.

Patented Oct. 6,1914.

Application filed August 13, 909. Serial No. 512,695. Renewed April 8, 1913. Serial No. 159,819.

T0 all zvhom it may concern:

Be it known that I, THEODOR REU'rnR,

engineer,a citizen of the Swiss Republic residing at 2-L ()bere \Vilandstrasse, Winterthur, Switzerland, have invented certain new and useful Improvements in Internallombustion Engines, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make-and use the same.

This invention relates to multi-cylinder reversible internal combustion engines which are started forward or backward by supplying all the cylinders with compressed air or gas and then subsequently changing the working of the several cylinders in groups or singly to that of internal combustion, which change is effected by adjusting the position of the engine starting and reversing device.

According to this invention the pump or pumps supplying the fuel to the cylinders are operated during the whole time the engine is working, both under compressed air and under internal combustion, but each pump has'a device, controlled from the reversing device, which is operated to interrupt the fuel feed to the cylinder or cylinders when the engine at starting is working under compressed air, but resumes the feed to the cylinders severally or in groups when the reversing lever is turned to the position for normal running in part or all of the cylinders as the case may be.

The changing over of the engine from by the joint control of the cylinder valves and the suction valves of the fuel pumps.

The engine has a reversing shaft with cam guides or cam disks, which are caused to'act through an intermediate link on the distributing cams or the like of thestarting air valves and fuel admission valves in such a manner that these are operated in sun cession in acertain order. When the en'- gine has been stopped all the'cams which act upon the air starting valves and fuelinlet valves are in inoperative position and :the fuel pumps are also in inoperative condition. \Vhen the engine is to be started, the reversing shaft is rotated a certain amount whereby all the starting valves for ternal combustion.

tion of the reversing shaft the working of one kind of running to the other is effected bers between the reversing shaft and thedistributing cams) the starting valve of one or more of thecylinders' is put out of operation and the corresponding fuel admission valve or valves are put into operation. At the same time,'owing to the re removal of the cams from the suction valves the fuel pumps start feeding the cylinder or cylinders which are now to operate with in- On the further rotathe remaining cylinder or cylinders which up to now have been running on compressed air, is changed to that of internalcombilstion either all at once or in succession or in groups as the case may be. The steps are the same whether the engine is running forward or reversing.

. In the accompanying drawings, Figures 1-4 are diagrams showing various positions of the cam guides for different phases of working, from the engine being at rest to the normal running of the engine under internal combustion; Fig. 5. is a section through a valve casing and the reversing shaft; Figs; 6 and 6 show a modified arrangement in lieu of the cam disks on the reversing shaft; Fig. 7 is a section of a fuel pump and fuel control devices; Fig: 8 is a cam and lever of the device shown in Fig. 7 Figs. 9 and'lO show various positions of the cams controlling the supply of fuel by the pump, and Figs. 1115 show an internal combustion engine with this invention applied. y

,In the drawings, a is the reversing shaft, and Z) the cam disks rotating therewith. The cam disks 1) are engaged by-the forksc loosely journaled on the shaft 6. The rotation of the cam disks [2 is transmitted by the rollers 03 to the fork c andthence to the valve is operated in this manner and each has a corresponding mechanism 6 c d e f 'w. i The operation of the reversing shaft and the shape of the cam disks is seen from Figs. 1-4, the cams being shown in various positions, from that which they have when the engine is at rest to that which they have when the engine is running normally under internal combustion. It is assumed that the engine has fourcyl-inders and that these cylfuel admission valveshave not however yet inders operate in two groups, I and II, that on' starting all the cylinders'work with compressed air, then'group II works under nternal combustion and finally all the cyl nders work under. internal combustion.

In Figs. 1 to 4, in the uppermost horizontal line the-positions numbered 1-4 show the positions of the cams for the fuel admission valves of group II, the second line or row the same for group I, the third row the cams for the starting valves of group II and the fourth row the same for group I.

In the position shown in Fig. 1, which is the'position when the engine is at rest, all the cams 6, forks c and rods f are in the mid-position, so that all the corresponding members w, Fig. 5, for operating the fuel admission and starting valves, are out'of action. In the position'for starting all the cylinders by compressed air, I Fig. 2, all the.

startingvalve operating devices or members are set in action, but the cam disks Z) of the raised their guide rollers. d,'so that all the fuel admission valve operating devices are still out of action. In the position for starting with halfof the cylinders operating with internal combustion (Fig. 3) the starting 1 valves. of the group II are out of action and the fuel admission valves of the group II are set in operation. In the position for normal running (Fig. 4) all the fuel admission valves are in operation and all the starting valves out of action.- x

The cam disks 1) may be replaced by a solid disk having a cam groove in which the roller (Z runs or the cam path may be raised from the surface of the disk. Also instead of being on a circular disk they can be in 'de'-. velopment on an oscillating system, the oscillating movement of the reversing shaft a then becoming an, oscillatory longitudinal motion; Also instead of the guidefork can ordinary eccentric keyed on the reversing shaft a may be used. This is shown in Figs.

6 and 6 where the rotation of the eccentric g rigidly fixed to the-shaft 0. results in a cornamely the division of the four working cylinders into two groups I and II of which group II is set to normal running before group I. I i

The fuel supply pump has several supply pistons corresponding to the number of groups of cylinders.in the present case two in separate supply chambers and for each piston there is a suction and pressure valve. A device shown in the drawings comprising an eccentrically journaled lever j effects in the usual manner the regulation of the supply through the pump between zero and a maximum. Apart from this regulat ion, according to the present invention, the-supply of fuel is interrupted when the engine is to be stopped and when working with compressed air, by the suction valve remaining open during the whole of the com- I pression stroke of the feed piston so that the fuel compressed by the piston flows babk. through the suction valve. I y

In the construction shown in Figs. 7 to 10, and adapted for this purpose, on the reversing shaft or on-an auxiliary shaft a connected therewith is fixed the cam disk Z with the two regulating cams m; and m one behind the other, which, in the position shown when the engine is at rest, raises both" the suction valves ic and Ze of the group and so cut offthe supply of fuel. n is the compression valve, 0 the supply piston and p a rod which operates the suction valve through the intermediate member 9 during normal running and so controls the supply of fuel to all the cylinders, aslong as the suction valves are not continuously raised by the cams m m p r and s are two eccentrics-on the shaft 2 operating the piston and rods 0 and 79.

Figs. 9 and 10 show successive positions 1-4: of the cam disks l in the fuelpumps, from a position of rest to running forward on inter- .nal combustion. The upper line, Fig. 9) re- 14 shows tion of the lever; g B further rotating the shaft (1., the fuel supp y valves are put into operation for the group I, and the suction valves of the corresponding supply pumps are released. The characteristic feature of the invention is therefore that on the one hand the starting or air valves are put out of operation one by one or in groups by the reversing shaft, at the same time the corresponding fuel admission valves are put into operation, while on the other hand the fuel sup ly is forcibly cut off by the reversing sha t. when the cylinders are working with compressed air.

In Figs. 11-15 the combined working of the fuel pumps and valve, operating devices is shown in one construction. The reference letters are the same as in Figs. l-8. Fig. 11 shows in elevation a four cylinder internal combustion engine with scavenging and compressed air pumps, the regulating mechanism being partly in section. Fig. 12 shoWS the fuel supply pump regulation, being a section through the auxiliary piston 7) in Fig. 11. Fi 13 shows in elevation the operation of the uel admission valves. Fig. the operation of the compressed air valves. Fig. 15 shows the operation of the scavenging air valves. p

The construction shown is an ordinary reversible two stroke engine which operates on the Diesel system. The regulation is effected by rotating the hand wheel m into the position corresponding to the kind of running intended. Through the hand wheel the movement is transmitted to the auxiliary reversing shaft a and the regulation of the fuel pumps is effected by means of the cam disks Z and their cams m m in the manner shown more fully in Figs. 9 and 10. The normal fuel supply then begins as soon as the cams m m have moved from under the rollers of the lever 9'. At the same time the operation of the cam disks 1) controlling the valves of the engine cylinders is effected by the rotation of the main reversing shaft (1 by shaft a by means of bevel gearing, as shown in Fig. 12.

' In Fig. 11 the two cylinder groups I and II are shown by two working cylinders each.

- The fuel injectlon and compressed air valves ply by the pumps are differently regulated for all four cylinders, the scavenging valve however is operated in-a constant manner for all cases.

The fuel injection valve, compressed air valve and fuel pump valve are operated by the eccentrics of the shaft 2 for each stroke,

the operation of the fuel and compressed ail" valves is dependent on the posit10n of the cam disks 6 also the operation of the suction valve of the fuel pump is dependent on the position of cam disk Z. In all cases the cam disks 6 and Z operate together in such a manner that the cuttin out of the fuel supand the cutting out of fuel supply valve operation is effected simula are the same for Figs. 12-15 and show the normal working of the four working cylin ders with fuel for forward running of the engine. The motion of the eccentric cams a is transmitted to the main valve by two armed rocking levers 'v fitted with rollers, as seen in Fig. 13.

What I claim is 1. In change-over mechanism for internal combustion engines having a plurality of cylinders, the combination with an air admission valve and an air starting valve for each of said cylinders, and a fuel-injection valve for each cylinder, of means for first setting all of the starting valves in action, and for then puttin said valves out of action and bringing tie fuel-injection valves into action ina predetermined sequence.

2. In change-over mechanism for multiple cylinder internal combustion engines, the combination with air admission and air starting valves for the respective cylinders, and fuel-injection valves for said cylinders, of means for first setting all of the starting air valves in action and then putting them out of action in a predetermined order at the same time that the corresponding fuel-ins,"

jection valves are brought into action, an a mechanism to operate said means in order .to

drive the engine forward or backward under tlhe impetus of explosions in all the cyliners.

3. In a multiple cylinder internal combust-ion engine, air starting valves for the several cylinders, fuel valves also associated with the cylinders, rotary engine driven means and devices adapted to be actuated thereby to actuate the starting and fuel valves, in combination with a, rotar ing and reversing mechanism includln elements pertaining respectively to said engine driven devices and connections between said elements and said devices whereby the starting valves are first brought into action, and then put out of action in predetermined order, the fuel valves being correspondingly brought into action, and in proper time or running under combustion either forward or backward dependent upon the movement of the reversing mechanism.

4. In a multiple cylinder internal combustion engine, the combination with air 'startin valves for the several cylinders, fuel va ves also associated therewith, arotar engine driven shaft bearing eccentrics, an membersactuated by the eccentrics and having double cam projections to actuate the Startin and fuel valves of the several cylinders or forward and backward runs ning, respectively, with an intermediate space ena ling the valves to be put out of actionyef a control device having elements start- '0, and to. then connected withthe double cam members of 5. In change-over mechanism for multiple cylinder internal combustion .engines, the combination with air starting valves asso- -ciated with the respective cylinders, and

1 5 fuel valves for said cylinders, of cam mechanism arranged to set all of the starting valves in action initially and to then put such valves out of action in a predetermined sequence and bring the corresponding fuel valves into action at the same time,

and pumping means'operative for supplying fuel to said fuel valves only as they are brought into action.

6. In changeover mechanism for multiple cylinder internal combustion engines, the combination with the starting valves and the fuel valves, of mechanism to set the starting valves initially in action, and-to then put said valves out of action and bring the fuel valves into action, and fuel supply mechanism automatically controlled by said mechanism.

7. In change-'overmechanism for multiple cylinder internal combustion engines, the

combination with the starting valves and the fuel valves, of mechanism to set the starting valves initially in action, and to p then put said valves out of. action and bring the fuel valves into action, and fuel supply 40 mechanism operated by the running of the engine but so controlled by said first named mechanism as to prevent the feed of fuel to the] cylinders until their respective fuel valves are brought into action;

8.- In change-over mechanism formultiple cylinder internal combustion engines, the combination with theair starting valves and the fuel valves, of cam mechanism toset all of the starting valves initially in action put such valves out of action and bring the fuel valves into action, a fuel pump having suction valves, and means to so actuate said suction valves when the correspondingfuel valves are out of action as $5 to ,cut off the supply of fuel from the respective cylinders. v I v v 9. A change-over mecha for multiple cylinder internal combustion-engines, comprising air Ista'rting' valves forpthe several -co cylinders, fuel valves also associated with cylinders, and fuelpumps for supplying the fuel valves, in combination withmeans operativeto' set the starting valves in action and thereafter put said starting valves out of action in predeterminedordem at the same time bringing the fuel valves correspondingly into action, said means also controlling said fuel pumps so as to render the same operative in the same order as the corresponding fuel valves.

10. In a multiple cylinder internal combustion engine, air startingvalves for the several cylinders, fuel valves alsoassociated with said cylinders, engine operateddevices for opening-and closing the starting and fuel'valves, and fuel pumps for supplying the fuel valves, in combination with a rotary control member bearing elements connected respectively with said engine-operated devices whereby the starting valves may first be brought into action, and then put out of action in predetermined order at the same time that the fuel valves are correspondingly brought into action, said control member also operating means for ren,

dcring said fuel pumps operative or inoperative in the sameorder as the fuel valves which they supply: 7

11'. In a multiple cylinder internal combusti n engine, air starting valves for the several cylinders, fuel valves also associated with said cylinders, engine operated devices for opening and closing the starting and fuel valves, and fuel pumps for supplying tliefuel valves, in combination with a rotary reversing shaft bearing elements connected respectively with the engine-operated devices and adapted by movement in either direction from mid-position first to bring the starting valves into action, and then to put the starting valves out of action in predetermined .order at the same time that the fuel values are correspondingly brought into action, for running forward or backward as the case may be, and means 'co-ordinated with said. reversing shaft for rendering said pumps operative and inoperative in the same order as thefuel valves which they supply.

12. In a multiple cylinder internal come bustion engine, the combination with air starting valves for the several cylinders,

fuel valves associated with the same cylinders, andfuel pumps for supplying the fuel valves, 'said fuel pumps having suction valves, of control mechanism adapted first to bring the several starting valves into action and-then to put said valves out of actionin predetermined order at-the same time bringing the corresponding fuel valves into action, said control mechanismalso including means 'actingupon the suction valves of the fuel pumps whereby the pumps are rendered; operative or inoperative in the same order as the corresponding fuelvalves.

13. In an internal combustion engine, the combination with air "starting and -fuel valves, a fuel pump forsupplying the latter,

and means' for actuating the startingand.

ifuel 'valves, of mechanism .for 'controlling said :u-l'uutiug means so as to change over In testimony whereof I have afilxed my from unoperntmn to combustlon runnmg slgnature, 1n presence of two \vltnesses.

and m nus acting upon the suction valve of THEODOR REUTER. the fuel pump to render the pump inopera- \Vitnesses: 5 tive except when the corresponding fuel \VlLHEIM BACHMANN,

valve 01- valves are in action. \VALTHER REINHART. 1 

